Can tartrazine (Yellow 5) in food act as an endocrine disruptor?

What's actually in it

Tartrazine, also called Yellow 5 or E102, is a synthetic food dye found in chips, candy, soda, cereal, pickles, mustard, and even some medications. It gives food a bright yellow or orange color. The FDA allows it in food, but some countries have put warning labels on products containing it.

What the research says

A 2026 study in Food Chem Toxicol tested tartrazine for endocrine-disrupting activity using standardized OECD testing methods. The researchers found that tartrazine activated estrogen receptor pathways, meaning it can mimic the hormone estrogen in the body.

Endocrine disruptors can affect puberty timing, reproductive health, and metabolism even at low doses. Children are especially vulnerable because their hormone systems are still developing. Since tartrazine shows up in so many kid-friendly foods, daily exposure can add up quickly.

Check ingredient labels for tartrazine, Yellow 5, or E102. Choose snacks and drinks colored with natural alternatives like turmeric or annatto instead.